Analysis and Study on Detection Capability of Satellite Photoelectric Imaging System

Ying, 张颖 Zhang; Yanxiong, 牛燕雄 Niu; Lu, 杨露 Yang; Haisha, 牛海莎 Niu; Bing, 许冰 Xu; Jiyang, 李继扬 Li; Jianming, 吕建明 Lü; Jianping, 李建平 Li; Wenwen, 刘雯文 Liu; Chao, 张超 Zhang

doi:10.3788/aos201434.0111004

Cited by 3 publications

(5 citation statements)

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“…The process of adding up all the image G1 at time t1-t3 to obtain the image M1 is called a level 3 integral image of g1. According to equation (2), the SNR of image M1 is about 1.73 times that of G1 [20]. We can use traditional Charge-coupled Device (CCD) or Complementary Metal Oxide Semiconductor (CMOS) with the imaging method in Figure 2 to achieve digital domain TDI, but the speed of the satellite relative to the ground is about 7 km/s and the Digital domain TDI will accumulate the images of the same object acquired by the camera at different moments, as shown in Figure 2.…”

Section: Principle and System Designmentioning

confidence: 99%

Section: Principle and System Designmentioning

confidence: 99%

“…The process of adding up all the image G1 at time t1-t3 to obtain the image M1 is called a level 3 integral image of g1. According to equation ( 2), the SNR of image M1 is about 1.73 times that of G1 [20]. We can use traditional Charge-coupled Device (CCD) or Complementary Metal Oxide Semiconductor (CMOS) with the imaging method in Figure 2 to achieve digital domain TDI, but the speed of the satellite relative to the ground is about 7 km/s and the We can use traditional Charge-coupled Device (CCD) or Complementary Metal Oxide Semiconductor (CMOS) with the imaging method in Figure 2 to achieve digital domain TDI, but the speed of the satellite relative to the ground is about 7 km/s and the spatial resolution is 10 m, which requires the detector to have a frame rate higher than 700 fps.…”

Section: Principle and System Designmentioning

confidence: 99%

“…Among them, Nr and Nd are determined by the performance of the detector. However, Ns is affected by many factors, such as ground pixel area, ground irradiance, aperture of optical system, and exposure time of detector, etc., as shown in Formula (1) [20].…”

Section: Snr Calculationmentioning

confidence: 99%

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The Instrument Design of Lightweight and Large Field of View High-Resolution Hyperspectral Camera

Fan

Liu

et al. 2021

Sensors

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The design of compact hyperspectral cameras with high ground resolution and large field of view (FOV) is a challenging problem in the field of remote sensing. In this paper, the time-delayed integration (TDI) of the digital domain is applied to solve the issue of insufficient light energy brought by high spatial resolution, and a hyperspectral camera with linear variable filters suitable for digital domain TDI technology is further designed. The camera has a wavelength range of 450–950 nm, with an average spectral resolution of 10.2 nm. The paper also analyzed the effects of digital domain TDI on the signal–noise ratio (SNR) and the spectral resolution. During its working in orbits, we have obtained high-SNR images with a swath width of 150 km, and a ground sample distance (GSD) of 10 m @ 500 km. The design of the hyperspectral camera has an improved spatial resolution while reducing the cost.

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Section: Principle and System Designmentioning

confidence: 99%

Section: Principle and System Designmentioning

confidence: 99%

“…The process of adding up all the image G1 at time t1-t3 to obtain the image M1 is called a level 3 integral image of g1. According to equation ( 2), the SNR of image M1 is about 1.73 times that of G1 [20]. We can use traditional Charge-coupled Device (CCD) or Complementary Metal Oxide Semiconductor (CMOS) with the imaging method in Figure 2 to achieve digital domain TDI, but the speed of the satellite relative to the ground is about 7 km/s and the We can use traditional Charge-coupled Device (CCD) or Complementary Metal Oxide Semiconductor (CMOS) with the imaging method in Figure 2 to achieve digital domain TDI, but the speed of the satellite relative to the ground is about 7 km/s and the spatial resolution is 10 m, which requires the detector to have a frame rate higher than 700 fps.…”

Section: Principle and System Designmentioning

confidence: 99%

Section: Snr Calculationmentioning

confidence: 99%

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The Instrument Design of Lightweight and Large Field of View High-Resolution Hyperspectral Camera

Fan

Liu

et al. 2021

Sensors

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show abstract

“…Wang et al used an image motion measurement method based on remote sensing images to study the problem of obtaining high-quality observation images by obtaining the displacement between adjacent frames through registration algorithms [9]. Ying et al analyzed the factors that affect the detection distance and established a mathematical model for the maximum detection distance of the optical observation system [10]. Lin-ling investigated the quality evaluation of remote sensing images related to subjective vision and proposed a method of the clarity quality [11].…”

Section: Introductionmentioning

confidence: 99%

Investigation and Validation of Mission Evaluation Models for Space Close-Range Inspection

Zhou,

Hou,

2024

International Journal of Aerospace Engineering

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Space close-range inspection can be used to carry out close-range observation and monitoring of targets for identifying the target’s types and working states, which is of great significance for space missions such as in-orbit services. The effectiveness evaluation of space inspection tasks will significantly affect the studies on the trajectory design, orbit motion control, and task termination conditions. However, the evaluation models in previous studies are too simple such as that they are usually without considering dynamic changes in the satellite orbit relative motion. Besides, these studies fail to build a comprehensive evaluation model for the whole inspection task process. In this paper, taking the most commonly used optical inspection as an example, the novel multifactor inspection task effectiveness evaluation models were investigated, including the constraint models of observation, the relative distance evaluation model, the effective observation time evaluation model, and the target observation angle evaluation model. These models solve the effectiveness evaluation problem for the complete process of an inspection task, which can support the design of inspection strategies and trajectories better by using the evaluation results. In addition, numerical simulations and 20 semiphysical experiments were carried out to validate the proposed evaluation models.

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The detection capability of space-based combined system for space debris

Zhang

Wang

et al. 2016

SPIE Proceedings

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Analysis and Study on Detection Capability of Satellite Photoelectric Imaging System

Cited by 3 publications

References 0 publications

The Instrument Design of Lightweight and Large Field of View High-Resolution Hyperspectral Camera

The Instrument Design of Lightweight and Large Field of View High-Resolution Hyperspectral Camera

Investigation and Validation of Mission Evaluation Models for Space Close-Range Inspection

The detection capability of space-based combined system for space debris

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